eliminating malloc contention in high-throughput rust services with thread-local aren

in a rust microservice that handles >200k req/s, the default jemalloc global lock becomes a measurable bottleneck on a 32‑core box. the latency spike shows up as occasional 5‑10 ms tails even when the CPU is otherwise idle. The Contention Problem malloc locks serialize allocation because the global allocator must protect its metadata;... Weiterlesen: eliminating malloc contention in high-throughput rust services with t…